APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF

1

Details of apparatus for conversion

32

Means for protecting converters other than by automatic disconnection

H

ELECTRICITY

02

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

M

APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF

3

Conversion of dc power input into dc power output

02

without intermediate conversion into ac

04

by static converters

10

using discharge tubes with control electrode or semiconductor devices with control electrode

145

using devices of a triode or transistor type requiring continuous application of a control signal

155

using semiconductor devices only

156

with automatic control of output voltage or current, e.g. switching regulators

158

including plural semiconductor devices as final control devices for a single load

H

ELECTRICITY

02

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

M

APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF

3

Conversion of dc power input into dc power output

02

without intermediate conversion into ac

04

by static converters

10

using discharge tubes with control electrode or semiconductor devices with control electrode

145

using devices of a triode or transistor type requiring continuous application of a control signal

155

using semiconductor devices only

156

with automatic control of output voltage or current, e.g. switching regulators

H

ELECTRICITY

02

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

H

EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS

3

Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection

18

responsive to reversal of direct current

H

ELECTRICITY

02

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

H

EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS

7

Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions